Five years ago this week… Netflix and Telefonica extended their zero rating partnership from Spain to cover all nine Latin American countries that the latter operated in. Zero rating (and its close relative, sponsored data) had been extremely divisive for pitting network neutrality against commercial freedom, but it seemed the two phenomena were gaining ground. The tide really turned against net neutrality with Trump’s surprise elevation to the White House, but zero rating had already been gaining ground in Europe where it was more favored by regulators than in the US under Obama. — Liberty Global and Warner Bros Discovery are exploring a divestment in UK-based production company All 3 Media, which was jointly acquired by the two US giants in 2014, according to…